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Table 2 HISTORIC FLUID LEVELS AND SELECTED ANALYTICAL RESULTS May 11 1990 Through August 2004 Former BF Oil 11192 i Date 'TOC Depth to LPH Ground- Change TPH-G TPPH Benzene Toluene Ethyl- Total MTBE MTBE Comments Sampled Elevation Water Thickness water in 8260B benzene Xylenes 8021E 8260E Elevation Elevation (feet)) (:feet) (feet) (feet) (feet) (48n) (lien) (µP,n) MW-1 08/05/91 5 52 — -- — — — -- — — _ -- — Dry 12/09/91 552 -- -- _ -- .. -. .. — — w — Dry 03/09/92 552 — -- __ _ -- -- — _- -- _ — — Diy 06/19/92 5 52 -- -- -- _ -- _ — _ — _ Dry 09/18/92 552 -- — __ __ ,. — -_ Dry 12/09/92 552 -- — _. __ ,. _ — — — -_ Dry 02/15/95 552 04/21/95 552 23 82 000 -1830 -- 820 -- 27 26 3 1 5 6 07/19/95 552 2292 000 -1740 090 620 -- 40 2 24 2 3 10/20/95 552 2332 000 -1780 — 450 -- 30 067 06 1 5 3 -- 04/233/96 552 1987 000 -1435 345 ND<500 -- 10 ND<O 5 ND<O 5 ND<0 5 42 -- 07/12/96 552 2099 000 -1547 -1 12 -- _- 10/18/96 552 2016 0.00 -1464 0 83 160 -- ND<0 5 ND<10 ND<l 0 ND<l 0 ND<10 — 02126/98 552 1190 000 -638 826 470 -- 16 ND<1 0 ND<l 0 ND<1 0 370 — 07/07/98 5 52 1140 000 -588 050 800 -- ND<0 5 ND<1 0 ND 01/19/99 5 52 1347 000 -795 -2 Q7 730 .. ND<1 0 ND<l 0 ND<l 0 ND<1 0 840 — 07/14/99 5 52 1227 000 -675 120 3000 -- ND<1 0 ND<l 0 ND<1 0 ND<1 0 3300 — 10/07/99 552 1390 000 -838 -- 4000 -- ND<1 0 ND<l 0 ND<1 0 ND<1 0 2500 — OI/20/00 5S2 1419 000 -867 -029 ND<50 — ND<O 5 ND<O 5 ND<0 5 ND<O 5 2400 — 04/11/00 552 1483 000 -931 -064 1100 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 3700 — 07/14/00 552 1172 000 -620 3 11 510 -- ND<O 5 ND<O 5 ND<O 5 ND<O 5 1300 — 10/26/00 5 52 1338 000 -786 -166 230 — 057 ND<O 5 ND<O 5 076 3000 — 01/16/01 552 1325 000 -773 013 230 — 0 688 ND<O 5 ND.<O 5 ND<0 5 271 -- 04/12/01 552 1181 000 -629 144 650 -- ND<O 5 ND<0 5 ND<O 5 ND<1 5 921 -- = 11192 0 Page I